Research Article Genotype x environment interaction and stability of soybean cultivars for vegetative-stage characters.

Chaves, M.V.A.; Silva, N.S.; Silva, R.H.O.; Jorge, Gabriel Lemes; Silveira, I C da; Medeiros, L.A.; Hamawaki, Raphael Lemes; Hamawaki, Osvaldo Toshiyuki; Nogueira, Ana Paula Oliveira; Hamawaki, Cristiane Divina Lemes

doi:10.4238/gmr16039795

Cited by 10 publications

(17 citation statements)

References 8 publications

(10 reference statements)

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“…The magnitudes of the coefficients of variation obtained in Experiment 1 and 2 were 7.96% and 7.35%, respectively, and they corroborate with those obtained by Nogueira et al (2008), Matsuo, Sediyama, Cruz, Oliveira andCadore (2012a) and lower than those obtained by Silva et al (2016), Chaves et al (2017), Camargos et al (2019 and Hanyu et al (2020).…”

Section: Resultssupporting

confidence: 90%

“…Concerning the fact of having identified significant difference between cultivars regarding the epicotyl length of soybean seedlings evaluated at the V2 development stage, the present work corroborates with those of Matsuo et al (2012a), Matsuo, Sediyama, Cruz andOliveira (2012b), Silva et al (2016), Chaves et al (2017), Alves et al (2019), Camargos et al (2019 and Hanyu et al (2020). The observed significance indicates that the soybean genotypes show differences among themselves, which enables successful selection of promising materials (Matsuo et al, 2012b).…”

Section: Resultssupporting

confidence: 84%

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Epicotyl length in seedlings of soybean cultivars subjected to reduced inter-row spacing

Gontijo¹,

Sousa

Matsuo

et al. 2021

ASB J.

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The objective was to evaluate the epicotyl length of seedlings of soybean cultivars in the field, submitted to plant densification by reducing the inter-row spacing. Two field experiments were conducted in Rio Paranaíba in the state of Minas Gerais and the effect of reduced spacing (20 cm, 30 cm, 40 cm and 50 cm between rows) was evaluated. The assessment of the epicotyl length was done by using a millimeter ruler when the plants reached the V2 development stage. The experiments were conducted in a randomized block design with four repetitions. In experiment 1, the BRSMG752S cultivar was submitted to four inter-row spacings and no differences were found among them. In experiment 2, the simple factorial scheme 4 x 3 was considered, with 4 spacings and 3 cultivars, to analyze the effect of the interaction between cultivars (96R10, 97R50 and 98Y21) and spacing (20, 30, 40 and 50 cm between rows). The results of experiment 2 indicated that there was no significant effect for spacing and that the cultivars presented statistically different averages. Thus, it can be concluded that the epicotyl length of soybean seedlings, grown in the field in Rio Paranaíba in the state of Minas Gerais and evaluated at the V2 stage of development, was not influenced by the distance between the sowing lines and that the cultivar 96R10 showed the highest and 98Y21 the lowest mean epicotyl length of soybean seedlings, grown in the field in Rio Paranaíba in the state of Minas Gerais and evaluated at the V2 stage of development.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 84%

Epicotyl length in seedlings of soybean cultivars subjected to reduced inter-row spacing

Gontijo¹,

Sousa

Matsuo

et al. 2021

ASB J.

View full text Add to dashboard Cite

show abstract

“…Estimates for genotypic determination coefficient (H 2 (%)) were superior to 74%, 78% e and 79% for hypocotyl and epicotyl length and plant height, respectively, regardless of the evaluation period. Estimates above 70% indicate high genetic influence on the phenotypic expression (Chaves et al, 2017). Thus, results from the present work show great genetic influence for characters in the two evaluation periods.…”

Section: Resultsmentioning

confidence: 46%

“…This shows the presence of genetic variance between the genotypes studied. This is a necessary condition for a character to become useful to character differentiation (Chaves et al, 2017;Nogueira et al, 2008;Silva et al, 2016). Estimates for genotypic determination coefficient (H 2 (%)) were superior to 74%, 78% e and 79% for hypocotyl and epicotyl length and plant height, respectively, regardless of the evaluation period.…”

Section: Resultsmentioning

confidence: 99%

Genetic parameters estimate and characters analysis in phenotypic phase of soybean during two evaluation periods

Hanyu

Costa

Cecon

et al. 2020

ASB J.

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Recent studies have shown the need to identify new potential additional descriptors for the soybean culture to contribute to cultivars differentiation. Thus, the objective of this study was to estimate generic parameters and analyze characters in the soybean plants in phenotypical phase, during two evaluation periods. The study analyzed 28 genotypes under greenhouse conditions, during two evaluation periods (October and December, 2017), in two stages of development (V2 and V3), regarding hypocotyl and epicotyl length and plant height. Experimental units (an average of two plants) were displayed in randomized blocks with four replicates. An individual and joint analysis of variance were conducted, and coefficients of experimental variation and genotypic determination were estimated for each character analyzed as well as the ratio between the experimental and genetic variation coefficients. Next, mean tests and the analysis of the phenotypic and genotypic correlation were carried out. Results showed that the genotypes analyzed differed in regard to hypocotyl and epicotyl length and plant height, at the V2 and V3 stages of development. In addition, the estimated magnitude of the genetic parameters and genotypic correlations showed genetic influence on the phenotypic expression of the hypocotyl and epicotyl length and plant height at the V2 and V3 stages of development.

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“…Barley and Egyptian clover raised as sole crops produced significantly higher biological and grain yields compared to barley-Egyptian clover intercropping treatments during both years. The final yield of a crop is a collective effect of agronomic, genetic and environmental conditions [35]. Barley and Egyptian clover yields were reduced by intercropping and planting geometries established with different planting intensities [24].…”

Section: Discussionmentioning

confidence: 99%

Optimizing planting geometry for barley-Egyptian clover intercropping system in semi-arid sub-tropical climate

et al. 2020

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Intercropping legumes with cereals has been a common cropping system in short-season rainfed environments due to its increased productivity and sustainability. Intercropping barley (Hordeum vulgare L.) with Egyptian clover (Trifolium alexandrinum L.) could increase the grain yield of barley and improve resource use efficiency of the intercropping system. However, non-optimum planting geometry has been a hurdle in the adaptation of barleybased cropping systems. This study was aimed at optimizing the planting geometry, and assess the productivity and profitability of barley-Egyptian clover intercropping system. Ten different planting geometries, differing in number of rows of barley, width and number of irrigation furrows and planting method were tested. Intercropping barley with Egyptian clover improved 56-68% grain yield of barley compared with mono-cropped barley. Barley remained dominant crop in terms of aggressiveness, relative crowding coefficient and competitive ratio. The amount of water used was linearly increased with increasing size of barley strip from 3 to 8 rows. The highest water use efficiency (4.83 kg/cf 3) was recorded for 8-row barley strip system with 120 cm irrigation furrows compared to rest of the planting geometries. In conclusion, 8-rows of barley planted on beds with Egyptian clover in 120 cm irrigation furrows had the highest net income and cost benefit ratio. Therefore, it is recommended that this planting geometry can be used for better economic returns of barley-Egyptian clover intercropping system. However, barley strips with >8 rows were not included in this study, which is limitation of the current study. Therefore, future studies with >8 barley rows in strip should be conducted to infer the economic feasibility and profitability of wider barley strips.

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Research Article Genotype x environment interaction and stability of soybean cultivars for vegetative-stage characters.

Cited by 10 publications

References 8 publications

Epicotyl length in seedlings of soybean cultivars subjected to reduced inter-row spacing

Epicotyl length in seedlings of soybean cultivars subjected to reduced inter-row spacing

Genetic parameters estimate and characters analysis in phenotypic phase of soybean during two evaluation periods

Optimizing planting geometry for barley-Egyptian clover intercropping system in semi-arid sub-tropical climate

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